This is the latest in our series of posts marking the 50th anniversary of the Copyright Act of 1976. To find a list of all the posts in this series, click here. The first thing you read when you open Title 17 is the first thing you will read when you open many sources of law—definitions. A list of definitions may not seem like the most exciting thing you will read this week, and perhaps it isn’t. But this is an appropriate place to start a celebration of the Copyright Act because a lot of the magic happens right here…